Ensure Invoice Item Field Value Exists in Other Table Before Save

[nsoftware-george]

Thank you both for your replies. I went with setting the PartNumber field to both read-only and required, which works to prevent saving the invoice item...

[nsoftware-george]

My installation has an additional table called "Products", which has several columns, including "Name" and "PartNumber"....

[nsoftware-george]

Thanks Yuri and everyone with suggestions. The problem is now solved.

Attached is the smallest set that looks identical to the original and...

[nsoftware-george]

Adding various combinations of &nbsp and <br> <br /> did not work. I also tried removing the extra <td> to no effect. Thank you...

[nsoftware-george]

1. No specific errors.
2. See below for steps.
3. EspoCRM 8.4.2
4. PHP 8.1.2-1ubuntu2.19
5. MySQL Server 8

-- The...